Free Shipping on all orders $35 and up.

We offer standard delivery in 3 business days or less.

Please see our shipping map below for estimated times.

Estimated standard delivery time to the U.S. and Puerto Rico

Delivery time estimates do not apply to large or heavy items that require special
shipping (including most TVs), items shipped directly from the manufacturer, or
out-of-stock items. Some items that ship from the manufacturer can only be delivered
to addresses within the 48 contiguous states.

Delivery time for standard shipping to any of the 50 U.S. states or Puerto Rico is 1-3 business days. Saturday, Sunday and national holidays are not considered business days for delivery purposes.

Ask an expert advisor

Big noise-canceling power in a small headphone

Noise-canceling headphones are excellent for travel. So why not get a pair that's small and easy to take anywhere? The AKG K391 NC in-ear headphones feature powerful noise-canceling technology so your music remains uncluttered by outside distractions. Block out airplane engine hum, the din of a crowded airport, the chatterbox sitting beside you, or simple office conversation. The K391 NC headphones ensure that the crisp high-end detail, warm midrange and deep bass aren't eclipsed by external distractions.

Take calls and control music with an in-line remote

When you're on the move, you can't always find your iPhone® quickly enough to take that call when it's buried in a bag. And try fishing it out while juggling multiple suitcases, carry-on bags and a boarding pass. The K391 NC lets you answer calls without even worrying about where your phone is. Just keep your headphones in and press the multi-function button on the in-line remote to answer your phone while the built-in microphone ensures clear call quality. The remote also lets you play and pause music on most portable devices.

Passive listening and easy charging

Worried that the built-in battery will die mid-flight? The music doesn't have to stop. Listen passively with the K391 NC when the noise-canceling circuitry doesn't have enough juice to operate. Recharging is as simple as plugging the noise-canceling module into your computer's USB port with the included cable. Keep it in the supplied felt drawstring carrying bag, along with the airline adapter, which allows you to access in-flight entertainment systems. With its compact design and clear sound, the K391 NC would be a valuable companion for your next trip, even if it's just to the office.

Product Highlights:

active noise-canceling circuitry minimizes external distractions

in-line remote lets you control music playback on compatible Apple® devices

in-line microphone for taking calls on an iPhone®, as well as use with Skype and FaceTime®

Product Research

Features

Overview: The AKG K391 NC in-ear headphones are equipped with Active
Noise Cancellation through a small in-line module. The headphones also have an
in-line single-button remote/microphone to control your phone calls and music
playback. The headphones and accessories can be stored in the supplied soft
cloth pouch.

Active Noise Cancellation: Each ear bud contains a tiny microphone
that picks up ambient noise. This noise is then canceled by an exact, but
opposite, waveform. All you hear is the music or audio that comes from your
smartphone. The ANC function can be turned on or off via a switch on the in-line
module.

Power Requirements: The Active Noise Cancellation function is powered
by a rechargeable battery located in the in-line module. The battery charges in
about 1-2 hours via USB through the supplied cable. A fully-charged battery
gives you approximately 35 hours of noise canceling performance.

Ear Buds: The K391 NC's ear buds have a closed back design to keep out
unwanted noise. They have an elegant brushed aluminum finish, and come
with three sizes of ear tips so you can achieve a good fit.

Cables: The headphones have a 44" cable from the ear buds to the Noise
Canceling module. Two different 19" cables are included for different smartphone
modules. The cables are made of 99.99% oxygen-free copper for best signal
transfer. An airline adapter (single female 3.5mm-to-dual male 3.5mm) is
included to allow you to use the headphones for in-flight entertainment.

Compatibility Note: The K391 NC headphones are compatible with the
majority of smartphone manufacturers. Most Apple, Samsung (from Galaxy S2), LG,
HTC, Sony, Motorola, and Blackberry models will use the cable with the silver
plugs. Some manufacturers, such as Nokia, require a different pin assignment, so
many of their models will use the cable with the black plugs. Not all
manufacturers provide support for the microphone and/or call answer button. Full
compatibility with the button is only guaranteed with Apple devices.

Specifications:

Frequency Range: 12 Hz - 24 kHz

Sensitivity: 107.5 dB SPL/V (passive); 115 dB SPL/V (active)

Driver Impedance: 32 ohms

Maximum Input Power: 500 mW

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to
find elsewhere. That's because we have our own in-house Product Research
team. They verify what’s in the box, check the owner's manual, and record
dimensions, features and specs. We stay on top of new products and technologies
to help people make informed choices.

* Agree to Terms
By checking this box you agree your review becomes the property of Crutchfield,
that you are over 18 years of age, that you own or have owned this product, and
that you are located within the United States or its territories. Please see our
Review Guidelines for more information. We reserve the right (but are not
obligated to) review all submissions and edit or remove any review in any manner
which we deem necessary. Your review should be posted within seven days.

Nice Sound in N.C. Mode

These in- ear headphones have a great sound quality which matters to me the most. They sound really nice when the noise canceling is on but not when the N.C. is off or runs out of power. [The only brand that masters that is PSB Speakers with their M4U2's; (they still sound incredible in passive mode or without the noise canceling being on) ]. The AKG 391 have a solid build quality compared to other in-ear headphones and they're definitely look nice. They also have a deep clean bass, which most in-ear headphones don't have. If sound quality matters to you as it is to me, give them a try.

Pros:Sound quality when noise canceling is on, build quality, looks.

Cons:They say you can still use them when you run out of power but so does its life; basically, you'll only want to use them in noise canceling mode in order to get a full sound. Other than that, they're nice. One of the best earbuds I've used by far. The only in-ear headphones that I'll put above these are called RBH EP1 or EP2. The RBH sound like you have around-ear headphones on. They sound fantastic and the bass in them is so deep but they're not N.C. They sound almost like my PSB M4U2's.

Product reviews from the Crutchfield Labs

Less noise, more music

If you're comfortable wearing in-ear headphones, the AKG K391 NC noise-canceling headphones might make a great traveling companion. In the Labs I tested them with our various ambient sound files played through speakers  airplane cabin, lawnmower, busy office. The K391s did a good job taking the edge off the unwanted noise. And when I played music through them, they were even more effective in blocking the ambient noise.

The K391s reproduced my music with clarity and detail. I heard a little more depth than I expect with in-ear headphones, which was a nice surprise. And the bass had real presence without overpowering the mix.

One thing to remember: because these are in-ear headphones, the effectiveness of their noise-insolation and noise reduction functions are dependant on proper placement. I initially just stuck them in my ears for a quick test and wasn't especially happy with the noise isolation. Then I tried them with different earbud sleeves that fit my ear canals better. With a tighter seal, the K391's performance improved dramatically (see the first two paragraphs).